Sash-cord guide.



PATENTED JULY 4, 1905.

G. D. CLARK.

SASH CORD GUIDE.

APELIUATION FILED AUG` 1s. 1904.

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Patented July et, i905,

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SPECIFICATXON forming part of Letters Patent No. 793,918, dated July 4, 1905.

Application filed August 13,1904. Serie] N0 220,630

le it known that I, (urnonen D. CLARK, a citi- Zen oiE the United States, residing at llainville, in the county oi Hartford and State of (1onnecticut, have invented certain new and useiul improvements in Sash-Cord Guides, otl which the 'following is a specification.

My invention relates to improvements in sash-cord guides; and the main objects ol" my improvement are convenience and eliiciency in use without any substai'itial increase in the cost oi the article.

ln the accomfmnying drawings, Figure 1 is a side elevation ot' my sash-cord guide. Fig. 2 is a sectional View of the same on the line w uf oi' Fig. l, the pulley and its axle or pin being shown in elevation. Fig. 3 is a side elevation of the upper portion oi the traine or case in a modiiied lorm. Fig. 4. is a rear elevation of the same. Fig. 5 is a detached side elevation oi the pulley. Fig. (i is an enlarged detail section otl the same on the line i/ ot Fig. 5. Fig. 7 a like View ol the same belore the two parts are put together.

'lhe pulley A and its axle or pin are or may be oi any ordinary construction. The frame or case is made ol'l a single piece oi sheet metal doubled upon itsel'l at the middle portion oi: nach side edge ot' the tace-plate et to `term a double selvage 5, while the two cheeks or sides (i are formed oi two wings extending from the inner thickness of metal which iornis the said selvage, the said wings being bent at a right angle to the face-plate and curved toward each other at the top and bottoni, all substantially as shown, described, and claimed in my Patent No. 495,021, dated April ll, 1893.

fl Vform an outwardly-tnrned 'Ilange 7 at the meeting or abutting ends` of the two cheeks or sides G with a serrated or toothed edge to iorrn the f:iste1iing-p1'o1ig's 8. These prongs are in the Vtorno of ratehetteeth, slanting on the top or rear edge and square or pa allel with the face-plate 4 on the front edge, as shown in Fig. l, whereby the prongs will deilect the wood when the pulley-frame is being driven in, and then the square edges will hold the lnllleydrame from being' pulled out.

ln order to separate or isolate these prongs, the metal is doubled upon itself, so that the points oi" the prongs in the two flanges 7 spread out in an oblique direction, as shown in Fig. EZ. 'llhese prongs 8 will hold the 'trame within its mortise, whereby no liasteningscrews are required and it is not necessary to perforate the faceplate to receive such screws. It is only neeessary to enter the sash-cord guide into its mortise in the wood where it is to be placed and then drive the guide into the n1or tise. 'lhis will give iour rows ot oppositelyextended lastening-prongs, two at the top and two at the bottoni.

`Vlfhile l prefer to construct the trame in accordance with my aforesaid patent, For the purpose oi this application, the side cheeks, with their meeting ends, are the main essential feature or foundation For the present invention, and therefore il these cheeks are present and adapted for the formation oli' the outwardly-turned lianges or prongs, the other 'Features of the ltraine lor the sash-cord guide are not essential.

In Figs. 3 and st the Vlrame or case has the same face-plate 4L, double selvage 5, and two cheeks or sides ('f; but instead oie bending the Yflange bach, so as to be substantially doubled upon itseli. as best shown in Fig. L), l matte but a slight bend in the metal adjacent to the upper and lower edges el" the cheeks (3, eut a row oll notches or spaces in the edges oli these cheeks, and bevel or slant the edge of metal let't between the saidspaces, whereby I lornl at the meeting portions ot the said cheeks two series olAI alternating points and spaces 9 and 10. These are so disposed that when the two cheeks are placed together the points oi one series enter the spaces in the other serios and Vterm an extended abutting surface to prevent the said edges trom shutting by each other and also Vform projecting lfastening -prongs similar to those iirst described. i have described the prongs at both the top and bottom oi the trame or case and li prefer to so make them, whereby the Yframe or case can be inserted either side up. Then once in place, however, the main reliance for holding it within its mortise in the window frameis the prongs at the top, as substantially all the strain tending to withdraw the frame or case comes at the top edge.

By providing two separated rows of fastening-prongs the said prongs take hold of the Wood on two lines so widely apart that the libers of the wood must be broken on two separate lines before the case can be pulled out, thereby giving the case substantially twice the holding power that it would have in a construction of case that might be released by one line ot breaks in the Afibers of the wood. In addition to thus doubling ot' the holdingl capacity it insures the full penetration of the prongs by arranging them so that they stand substantially in alinement with the metal at the sides of the meeting ends of the case, so that the resistance of the pressure ot' the prongs is transmitted to the metal in an edgewise direction Without any tendency to bend the metal inwardly and lessen the penetration oi' the prongs, as would be the case with thin metal, when the prongs stand substantially at right angles to the metal from which they are extended.

The pulley, as shown, consists ot' a tubular bushing l2 and two disks of metal 13 struck up into the proper form for the rim and hub with an annular iiat portion 14 between the rim and hub. A pulley having similar disks fastened together by the bushing and recesses and projections or by rivets or by integral eyelets is older than my present invention, and therefore is not broadly claimed herein. Instead of rivets or eyelets I Jform in each disk two radially-extended slots l5 in the said annulariiat portion on diametrically opposite sides, and half-way between the said slots I cut out integral lips or prongs 16, arranged in pairs, the lips in each pair standing parallel to each other and at first bent at right angles to the said annular fiat portions, as shown in Fig. 7, the said lips being so spaced relativelyto each other and to the said slots that each pair of lips substantially lls one of the said slots. The two parts ordisks are alike and theyv are placed together with the lips of each disk projecting through the slots of the companion disk. After placing them together the edges of thelips are turned down or clenched, as shown in Figs. 5 and 6, two pairs of lips being clenched down on one side of the pulley, as shown by full lines in Fig. 5, and two pairs being clenched down on the opposite side ot' the said pulley, as shown by the broken lines in said Fig. 5. The slots and lips extend in substantially a radial direction Jfrom hub to rim or' the pulley and greatly strengthen the same, as well as providing an inexpensive and efficient means of fastening the two disks together. The fastening means is particularly eilicient in securely holding' the two disks together by reason oi having' each one otl the clenched or turned-down lips or prongs extend from rim to hub with an unbroken and continuous edge.

I claim as my inventionA l. A pulley fora sash-cord guide, comprising two disks with rims, the said disks having radial slots extending inwardly from the rim and a pair of radial lips for each of the said slots, the said lips extending inwardly from the rim and clenched over the opposite edges of the metal at each of the said slots in the form ot' spoke-like reinforcements.

2. A frame for a sash-cord guide formed ot' sheet metal, and having side cheeks with meeting ends, the said ends having iianges with Jfastening-prongs formed at the outer edges, the said flanges being rolled over from the said ends so as to substantially double the metal upon itself with the pronged edges slanting outwardly away from each other while the bent portions of the said flanges at their junction with the said ends abut against each other and form the meeting upper ends of the said cheeks.

3. A frame for a sash-cord guide formed of sheet metal, and having side cheeks with meeting ends, each of the said ends having fastening-prongs, the said prongs in the two meeting ends being spread apart to extend laterally in opposite directions and form two separated and longitudinally -extended rows of projecting prongs.

4. A pulley for a sash-cord guide, comprising two disks with rims, the said two disks havingl radial slots extending inwardly from the rim and a pair of radial lips for each ot' the said slots, the said lips extending inwardly from the rim in pairs with an open radial space between the lips of each pair and with one lip of each pair bearing against and clenched over one radial edge of one slot and the other lip in the same pair hearing against and clenched over the opposite edge of the same slot, the said slots and spaces in the said two disks registering with each other and forming radial openings through the pulley with both radial edges of each of the said openings having a continuous unbroken turned-over metal edge.

5. A frame for asash-cord guide formed of sheet metal and having' side cheeks with meeting ends, the said ends having flanges with fastening-prongs formed at the outer edge and extended in the same general direction as the metal immediately on each side of the said meeting ends, whereby the resistance to the pressure of the prongs when the case is driven into the wood, is transmitted in the edgewise direction of the metal on each side of the said meeting ends ot' the case.

GEORGE D. CLARK.

VvTitnesses:

D. G. CLARK, H. C. GrooDRicH.

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